164430189 has 64 divisors (see below), whose sum is σ = 306432000. Its totient is φ = 84654720.

The previous prime is 164430179. The next prime is 164430191. The reversal of 164430189 is 981034461.

164430189 is a `hidden beast` number, since 1 + 644 + 3 + 0 + 1 + 8 + 9 = 666.

It is not a de Polignac number, because 164430189 - 2⁵ = 164430157 is a prime.

It is a super-3 number, since 3×164430189³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164430139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 288697 + ... + 289265.

It is an arithmetic number, because the mean of its divisors is an integer number (4788000).

Almost surely, 2^164430189 is an apocalyptic number.

It is an amenable number.

164430189 is a deficient number, since it is larger than the sum of its proper divisors (142001811).

164430189 is a wasteful number, since it uses less digits than its factorization.

164430189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 164430189 is about 12823.0335334507. The cubic root of 164430189 is about 547.8485526846.

The spelling of 164430189 in words is "one hundred sixty-four million, four hundred thirty thousand, one hundred eighty-nine".